Improvement in rotary printing-presses



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www@ www UNITED STATES PATENT CEEICE.-

CHARLESIIONTAGUE, CYRIL CHILD,AND CHARLES PAINE, OF BOSTON, j MASSACHUSETTS; SAID MONTAGUE AND PAINE ASSIGNORS TO SAID CHILD.

IMPROVEMENT IN ROTARY PRINTING-PRESSES.

Specification forming part of Letters Patent No. 151,499, dated June 2, 1874; application filed March 19, 1873.

To all whom it may concern:

Be it known that we, CHARLES MONTAGUE, CYRIL C. CHILD, and CHARLEs PAINE, of

' Boston, Massachusetts, have invented an Improvement in Printing-Presses, of which the following is a specification:

The nature of our joint invention consists in a number of improvements in cyiinder printinpresses. The first part relates to the device for raising and lowering the cylinder, and securing a more solid impression. The second part relates to the mechanism for suspending the operation of some parts of the press and not others.

Figure I is a side elevation, showing our improvements. Fig. II is a plan view with the cylinder and bed removed. Fig. III is a section on lines z zkFig. II. Fig. IV is an end view of arms E and E. Figs. V and VI are views of rod It with the latches. Fig. VII is a rear-end elevation of press. Fig. VIII is a section of a side elevation of balance-wheel side. Figs. IX and Xis a view of nipper-cam and spring, with nippers open and closed. Fig. XI is a cross section of the cylinder, showing the nippers.

On ways D, which are attached to frame A, bed B is reciprocated under cylinder C, actuatedbypower applied to atl y-wheel and through gear I and vibrating lever H. 'F is a shaft which conveys power from the same source to a double cam-wheel, G, or which may be two cams placed side by side, which are fastened to the shaft. In convenient position to camwheel G are bolted to the frame of press levers J. and S, by studs e and c', and on which they have a rocking motion. e may be a shaft. On the ends of levers J and S are placed friction-rolls c and o, to be acted on by camwheel G, the other ends being connectedl by rod c.V Rod. d connects arm E with lever S and one end of shackle-bar U. Shackle-bar U is connected at its other end by rod d to arm E, and is vibrated on stud m. Lever S, in addition to its rocking motion, may be moved laterally on stud e', and rods c and el are so connected with it and shackle-bar U as to' allow it to move laterallyT fully the width of the friction-roll. Thesegment of the largest periphery of cam g on camwheel Gr should occupy the same proportion of the whole circle that the impression portion does to one completed operation of the press. Thus it will vary with the size of the press and the length of impression desired. The segment of the greatest periphery of caIn h on caniwheel G should occupy the balance of one complete operation of the press lessv one-half the cam portion on cams g and h, which are devoted to operating levers J and S in their operation of raising and lowering cylinder C. The friction-rolls on levers J and S are set out of line with each other, so that cam h shall act on roll of J, and g on roll of lever S. E and E are arms, near the tops of which are rectangular open spaces, in which are fitted boxes for the journals of cylinder. Said boxes can be arranged for adjusting the impression by any of the well-known' modes. At their opposite ends arms E and E', Fig. IV, straddle frame A, the prongs of each being connected through cam slots a and c by a pin, on which is a friction-roll, the cylinder being supported at each end by only a single piece, with only one joint at which lost motion will be liable. Both joints are capable of being made in the most solid manner, thus overcoming the difficulties of wear in the joints, and saving much of the lost motion usually found in this class of presses. Slots c and c are cam-slots, so shaped that in swinging arm E forward and E back the cylinder is raised sufticiently to allow the bed to return without hitting the cylinder. On the sides of arms E and E, on the average horizontal line of center of boxes for Acylinder-journals, are segments of a circle struck from center of journal of cylinder, said segments' having bearings against frame at b and b, Fig. I, thus securing arms E and E in a rm position, yet allowing them to move freely back and forth on cam-slots a and c. In the operation of this mechanism cam-wheel G revolves in the direction of the arrow, and cam g strikes frictionroll on lever S, and through lever S and its connections forces arms E and E down into the lowest portions of cam-slots a and a', when cylinder and bed will be in conjunction in their motion for taking an impression, the arms bcing firmly held in a vertical position, thus bringing the strain of the impression wholly on arms E and E and the frame of press until the impression is completed, when the segment of greatest periphery of cam g passes away from its friction-rolls, and cam h acts on friction-roll of lever J, and through its connections forces arms E and E to the highest points of vslots c and a', and raising the cylinder, which is held until cam g is in position to act again, thus holding the cylinder firmly up or down, except when it is passing up or.

down, or when the impression is suspended, as hereinafter shown. R is a rod passing entirel y through the press, and held in position by loose bearings in frame. On fceders side of press (opposite balance-wheel) is a lever, V, pivoted at any desired point below rod R, and connected with the end of the rod at or near the center of lever V. At the other end of rod is a knob or handle. In line with lever S is aforked piece, j, fastened to rod R by a set-screw or pin, the forked end of which straddles lever S. lod R has about an inch of end motion in practice, and is held to the end of its motion toward the feeders side by a spring, s', Fig. II, and in that position lever S is in position to produce .an impression; but if the feeder misses a sheet, or wishes to omit an impression, he presses his knee against lever V, which is in a convenient position, for the purpose of forcing rod R and lever S laterally out of the way of cam g on cam-wheel G. By the use of hook r on the feeders end of rod R, or latch w on the opposite end of said rod, the opera-tion of lever S and the impressional work of the press may be suspended as long as isdesired, the pressure of spring s on rod R operating on latch w or hook r to prevent the release of rod R; but if rod R is forced from either side of the press to the extent of its motion toward the balance-wheel, the latch or hook will drop by its own weight, and permit the spring s to force the rod to its normal position, the operator being able to both suspend and reproduce the impression from either side of the press, and saving unnecessary travel around the machine. At the time when lever S can be projected by rod R out of line of cam g, andthe impressionalfunction of the press thereby suspended, the cam 7L is always in contact with the friction-roll of lever J, forcing and retaining the impressioncylinder at its highest point and beyond contact with the form of type 5 but when the cam g, in its revolution, would next engage with the lever S to produce an impression, the cam h has passed away from lever J, and ceases to retain the cylinder from descending, if its weight should be sufficient to overcome the inertia of the mechanism which supports it.

In order to provide greater security against its depression by its own weight, whenever lcver S is removed from the path of cam g, a projection, j", is attached to the frame, in such position that, when lever S is moved beyond the path of cam g, it is moved behind projection j", by which it' is prevented from any movement in the direction which it would receive if the cylinder were depressed while the lever J and cam 7b were not in contact, the projection f operating only to prevent the oscillating movement of lever S whenoperated an d held by rod R, but not interfering with its lateral operation, as before described. The rear portion of cam g is beveled longitudinally,

so that in backing the press it shall act to force laterally lever S. A crooked lever, z', on feedcrs side of machine, is pivoted to inside of frame by stud l, projects through open space to outside, and extends up to the pin q, which vibrates to operate the nipper-rod in cylinder at the desired time. The cylinder having two revolutions to each complete operation of the machine, ythe pin q, which operates the nipperrod, is drawn away from vcontact with cam t on nipperfrod, by cam o on bed B, at that portion ofthe revolution of cylinder that impression is being made. A spring, rf, attached to lever fi, holds pin q in, except when forced out by cam of or rod R. The lever t' projects downward from point where it is pivoted to rod R, which it straddles. A collar, f, on rod R comes in contact with lever z', and when rod R is moved laterally, to suspend an impression, the pin q is moved out of line of nipper-cam t without interfering with its regular operation, and thus preventing a sheet being torn or carried through without printing whenever the impression is suspended, and allowing all the time for feeding the sheet. On the ily-wheel end of rod R, and extending at right angles from said rod, is attached piece n on a line with the guide-cam o on end of main shaft F, on which piece a rests, and piece a extends up nearly at right angles to clear gear and other parts, where it extends into frame, and forms a plate for guide-rod p to rest on, guide-rod p being' made with a knee-joint, and pivoted to the frame, and is sustained by the frame of press. Its operation is that, whenever the feeder suspends the impression by means of rod R, piece a is moved out of line of cam o, thus leaving the guides down for the feeder to adjust the sheet.

The operation of the devices hercinbefore explained is as follows: The operation ofthe crank causes the cylinder C to revolve and the bed to reciprocate through mechanism which is no part of this invention. A sheet is presented to the guides attached to rod p, and at the proper time in the rotation of the cylinder the guides are raised, to allow the sheet to be taken, by means of cam o on the main shaft of the press, and the sheet is seized by the gripers and carried around with the cylinder, coming in contact with and receiving impression from type placed on bed B. After receiving the sheet, and before the edge of the sheet comes in contact with the type, cani g on cainwheel Gr operates on friction-roll c on lever S, causing its operation, and bythe shackle-bar U and connections oscillates the arms E and 'pended, preventing any impression.

W, the lower 4ends of which operate in slots a and a', the oscillation of the arms operating' to depress the cylinder, so that during one movement of the bed the surfaces of the type and cylinder come in contact and secure an impression upon the sheet of paper. lVhen the impression `is completed, caln h encamwheel Gr, operating on the friction-roll V of lever J, and through the same connections and shackle-bar U, returns arms E and E to their original position, thereby raising cylinder C sufficiently to allow ot' its rotation and the return of the bed without contact between their surfaces. For the purpose of arresting` the impressional function of the press, lever S is connected with a rod, R, by a forked piece, j, and when rod R is moved, either by pressing' the knee against lever V or by hand, lever S and-its Jfriction-roll c are thereby moved laterally out ofthe path of cam g on cam-wheel G, and the operation of arms E and E and the depression of the cylinder are thereby sus- Rod R, in its movement, also operates upon lever i to withdraw the pin which operates the gripers, and prevents the closing' ofthe gripcrs. Arm n, being connected at one end with rod E, is also moved away from cam 0 when the rod is operated, preventing the rising of the guides, rod lt thereby suspending the operation of the impression, guides, and gripers at the will of the operator, without preventing the operation ot' other parts ot the press. Connected with rod lt are hook r, latch w, and spring s', the spring acting to force rod R to its normal position, where lever S will be operated by cam g. When it is desired to suspend the'impresi sion during more than one operation of the press, either hook r on the feeders side, or the latch 1v on the other side of the press, maybe made to enga-ge with the frame of the machine, the spring s operating' to fasten the hook or latch. Hook i', latch zu, and spring s are not essentia-l to the practical utility of this device, except as additional conveniences.

The means for delivery of the sheet and rolling the form may be any well-known mechanism.

Having fully set forth and described our in vention, what we claim as new, and desire to secure by Letters Patent, is-

1. Combination ot' cylinder C and arms E and E', said arms to worl; in the slots c and a in the frame A, for the purpose of raising and lowering the cylinder, substantially as described.

2. .Rod R with arm j, in combination with lever S, for the purpose of suspending the impression at will, substantially as set forth.

3. Levers J and S, connected by rod c, in combination with cams g and h, for the purpose and substantially as described.

4. Combination of rod R with lever c', t'orsuspending the operation ot' the nippers, substantially as described.

5. Combination ot' rodR with arm a, for suspending the operation ofthe guides, substantially as described.

6. Rod R, arm j, lever S, and sp1-ing s, in combina-tion with lever V, having hook r and latch w, attached to rod R, for alternately suspending the impression, substantially as described.

Boston, November ll, 1873.

CHARLES MONTAGUE. CYRIL C. CHILD, CHARLES PAINE.

ldflitnesses:

F. A. DUNBAR, C. VAT'rs L. MONTAGUE. 

